similar to: Icecast 2.4 - the road ahead

Hi everyone, I'm working on a WebM plug-in for Premiere. You probably already know that WebM is a Matroska container that uses Vorbis for audio compression. I'm pretty new to the world of audio compression and need some help. You can see my code here: http://github.com/fnordware/AdobeWebM First of all, I wonder if it's possible to seek to an exact audio sample in WebM. Whereas

Hello list! Since it is more and more common these days to create enhanced podcasts (= audio files with additional chapter markers [1]), I am searching for an alternative to the currently used MP4 format. ID3 also puplished an official standard for chapters [2], but nobody seems to use and support it. Now I am trying to get something similar with vorbis audio (and maybe an additional

On Sat, May 22, 2010 at 12:06:15PM +0300, Alexandru Ardelean wrote: > Hey everyone. > > If you haven't seen this already, last week was Google I/O the third > edition. > The event page is : http://code.google.com/events/io/2010/ > The youtube channel with the keynotes is : > http://www.youtube.com/googledevelopers > One of the most interesting things at that conference

Hey everyone. If you haven't seen this already, last week was Google I/O the third edition. The event page is : http://code.google.com/events/io/2010/ The youtube channel with the keynotes is : http://www.youtube.com/googledevelopers One of the most interesting things at that conference was the introduction of the WebM codec, which is a combination of On2's VP8 video codec (which is now

Hi Vorbis-Dev, I'm investigating various WebM/Vorbis bugs in chromium. AFAIK muxing Vorbis inside of WebM does not have an official specification, so I'm using ffmpeg's implementation to try to answer 2 questions: 1. Under what circumstances is it valid to find WebM Blocks containing Vorbis data with zero duration? (This would mean the next Block in the Cluster has the exact

Sorry I replied in private ... 2011/1/31 Quentin Drouet <kent1 at arscenic.info> > > > 2011/1/31 Romain Beauxis <toots at rastageeks.org> > > Le dimanche 30 janvier 2011 03:54:10, michel memeteau a ?crit : >> > Is there some evolution on Webm support, does it need a lot of changes >> > in Libshout for example ? or does the code structure of icecast

Le dimanche 30 janvier 2011 03:54:10, michel memeteau a ?crit : > Is there some evolution on Webm support, does it need a lot of changes > in Libshout for example ? or does the code structure of icecast makes > it easy to add new containers/codecs ? Well the interesting question is: "Is webm streamable?". I don't know much about it nut webm is wrapped into a matroska-based

Am Freitag, den 27.08.2010, 20:51 +0300 schrieb Sampo Syreeni: > On 2010-08-27, Ralph Giles wrote: > > >> My question to you, What advantages has ogg vs matroska. > > > > They're both free containers, and there isn't a significant > > performance difference, so either one works from a free media > > perspective. [...] > > Personally I would

Hey all, friendly ping :) Any help is much appreciated. On Thu, Jun 18, 2015 at 6:56 PM, Chris Cunningham <chcunningham at chromium.org > wrote: > Hi Vorbis-Dev, > > I'm investigating various WebM/Vorbis bugs in chromium. AFAIK muxing > Vorbis inside of WebM does not have an official specification, so I'm using > ffmpeg's implementation to try to answer 2

Hi I have built and installed ffmpeg 0.6, Libvorbis Version 1.2.0 and, VP8 (libvpx-0.9.1). When I runn ffmpeg on the command line everything appears to work fine. I give it an input webm file downloaded from youtube.com and generate a different ouput webm file. However when I try and encode the same webm input file hosted on my local HTTP server using the ffmpeg API over a HTTP stream I get the

Yes, it's basically an intrinsic aspect of the mathematics. If you seek into the middle of an Opus stream, that's about how long it takes before the audio converges to be correct. On Jan 17, 2014 2:13 PM, "Brendan Bolles" <brendan at fnordware.com> wrote: > On Jan 7, 2014, at 11:11 AM, Brendan Bolles wrote: > > > The closest thing to a standards document for

https://bugzilla.samba.org/show_bug.cgi?id=13248 Bug ID: 13248 Summary: Updates for DEFAULT_DONT_COMPRESS suffix list Product: rsync Version: 3.1.3 Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5 Component: core Assignee: wayned at samba.org

On Jan 7, 2014, at 11:11 AM, Brendan Bolles wrote: > The closest thing to a standards document for putting Opus into WebM is here: > > http://wiki.xiph.org/MatroskaOpus I'm curious about the part there where it says SeekPreRoll should be set to 80000000. I believe those are in nanoseconds, so that's 0.08 seconds, 3840 samples at 48kHz. Here's a page explaining that it

On Jan 17, 2014, at 3:00 PM, Timothy B. Terriberry wrote: > The intent was not to allow gaps in the file like this (that would > confuse the encoder, compress badly, and complicate decoders, plus be > unrepresentable in Ogg). The intent was to allow trimming from the > _last_ frame in a stream to allow sample-accurate total duration. Ahhh, that makes sense. So you'd add some

Hallo all, euphoria with cheese, the project i working on, i needed to make decision about codecs and containers we use. I'm clearly not expert in this. After the euphoria about vp8/webm going slowly to the end, i see advantages what theora has against vp8. Seems like theora perform better on LoEnd hardware. Even x264 with good optimisation work not really good on slow Athom. My question to

On Jan 17, 2014, at 3:19 PM, Brendan Bolles wrote: > I don't think Vorbis has the fixed-frame issue of Opus where audio frames might not align with Matroska timestamps. Whoops, I meant for the total duration of the file you should be able to have your vorbis length match the file duration length exactly. As my next paragraph said, in general I think the Vorbis packets will never align

What got me experimenting with Opus is that I heard it's going to be a supported codec in WebM, which I also have a Premiere plug-in for: http://github.com/fnordware/AdobeWebM I just posted a new beta that includes Opus support. Naturally, I *think* I'm doing it right, but I'd love for someone more knowledgeable about Opus or WebM to take a look. The closest thing to a standards

On Jan 17, 2014, at 2:19 PM, Benjamin Schwartz wrote: > Yes, it's basically an intrinsic aspect of the mathematics. If you seek into the middle of an Opus stream, that's about how long it takes before the audio converges to be correct. I see. Thanks for the info. Any idea about the other Matroska tags? I guess CodecDelay will be the value you get from OPUS_GET_LOOKAHEAD()

Brendan Bolles wrote: > DiscardPadding seems to assume that you might top off an opus > frame with empty samples when the frame would spill onto the next > matroska timestamp. So rather than have continuous opus that > could be decoded one after another, you'd have to jump over these > little gaps? The intent was not to allow gaps in the file like this (that would confuse the

Hello , We are using Icecast for few years in a small french radio station with great success ! ( hitting 60 simultaneous listeners sometimes :-) ) http://www.radiogalere.org:8080/ Now we plan to stream the webcam capture of the studio, we 've done a test with Ogv/theora @128kb video with great sucess although none of the HTML5 browser wher able to keep on playing the stream after few